Display screen or portion thereof with transitional graphical user interface

Description

FIG. 1 is the first image in a sequence for a display screen or portion thereof with transitional graphical user interface showing our new design;

FIG. 2 is the second image thereof;

FIG. 3 is the third image thereof;

FIG. 4 is the fourth image thereof;

FIG. 5 is the fifth image thereof;

FIG. 6 is the sixth image thereof;

FIG. 7 is the seventh image thereof;

FIG. 8 is the eighth image thereof;

FIG. 9 is the ninth image thereof; and,

FIG. 10 is the tenth image thereof.

The appearance of the animated user interface sequentially transitions between the images shown in FIGS. 1-10. The process or period in which one image transitions to another forms no part of the claimed design. The broken line showing of the alphanumeric characters, symbols, and display screen in the Figures is for environmental purposes only and forms no part of the claimed design.

Claims

The ornamental design for a display screen or portion thereof with transitional graphical user interface, as shown and described.